Mechanical seals and hydromechanical seals

It is generally difficult for people to tell the difference between mechanical seals and hydraulic seals, which are usually considered to be the same thing.

1. Talking about machinery, seals and hydraulic pressure through seals

The mechanical seal is one of the most sophisticated mechanical basic components. It is a key component of various equipment such as pumps, reaction synthesis kettles, turbo compressors, and submersible motors. Its sealing performance and service life depend on many factors, such as type selection, machine precision, correct installation and use, etc.

The hydraulic seal has pressure requirements, and the surface of the joint is required to have a certain degree of smoothness. The seal is made of rubber, and the sealing effect is achieved through the deformation of the seal.

Second, the classification of mechanical and hydraulic seals

Mechanical seal model: cartridge seal system series, light mechanical equipment seal series, heavy construction machinery design seal series, etc.

Mechanical seal manufacturers

Hydraulic mechanical seals: lip seals, V-shaped seals, U-shaped seals, Y-shaped seals, YX-shaped seals and hydraulic cylinders are commonly used combinations and seals are mainly bud-shaped rings, Gelai rings and Si special seal.

3. How to choose a seal

When purchasing seals for maintenance, most users will purchase according to the size and color of the sample, which will only increase the difficulty of purchasing and may not necessarily choose the right product. In order to improve the accuracy of stamp procurement, the following procedures are recommended:

1. Direction of movement; first determine the direction of movement of the seal at this position, such as reciprocating, rotating, rotating or fixed.

2. Seal key - eg decision point is rod seal activity or event point is inner diameter of outer diameter of piston seal etc.

3. Temperature grade - review the operating conditions of the original mechanical design or evaluate the working temperature of the enterprise according to the actual management of the working and living environment risks, and determine the required materials. Instructions for temperature grades can be found in the following notes for production users.

4. Pressure level - explain the current relevant data from the original used machinery, or infer the working pressure level by observing the hardness and structure of the original seal. The description of the pressure level can generate the user's reference to the following considerations.

5. Size - Most enterprise users will purchase information based on used old samples, but after a period of working time, the seal will be greatly affected by factors such as ambient temperature, pressure and wear, and its original size will be greatly affected. We can only use ourselves as an important reference for students for this choice. A better way is to measure the size of the metal groove where the seal is located, and the accuracy will be higher.